If you find your new Land Cruiser FJ a tad asthmatic at Gauteng altitude due to the lack of forced-induction, Rob Green Motorsport (RGM) has the solution.RGM already markets a supercharged version of the Toyota Prado, which uses (despite a two kW discrepancy in power and one Nm difference in torque) the same four-litre, dual-VVTI, V6 engine to the FJ.The Prado’s rated at 202kW/381Nm and FJ at 200kW/380Nm. RGM’s Prado supercharger upgrade swells peak rotational force from 381 to 540Nm while boosting power to 326kW.PLENTY OF BLOWN V6 OPTIONSThis neat charge-cooled blower conversion is now available for the FJ, Hilux/Fortuner and Land Cruiser bakkie – all thanks to the similarity of their four-litre V6 configuration. The Land Cruiser 70 bakkie and Hilux/Fortuner models, due to their use of the single-VVTI, produces slightly less power than the Prado/FJ, though 290kW is still plenty. Facilitating these performance-car outputs is a Vortech centrifugal supercharger. Cognisant of severe local operating conditions (high intake air temperatures), RGM’s engineered a water-cooled charge-chiller to ensure intake air density is optimised. It lives atop the intake manifold.A recalibrated ECU harmonises the additional forced-induction and cooling modifications to the 4l V6’s operation parameters.RGM’s Rob Green says the increased number of Toyota 4x4s running the company’s 4-litre V6 engine has enabled his outfit to expand its tuning options for customers who require additional power for towing or sand-driving requirements. "The underbonnet architecture is to all intents and purposes identical, which means our existing bolt on Supercharged conversion will fit, no problem."PROVEN RELIABILITYLowering air intake temperatures are key to the RGM Toyota V6 conversions. Green elobrates, "by reducing intake air temperature by up to 60-degrees, the compression ratio of these engines can be left unchanged without sacrificing durability."The reliability of the RGM conversion is well-proven and the company has successfully executed nearly 30 Supercharged conversions on Toyota’s V6. For those Toyota 4-litre V6 4X4 customers who don’t wish to add a blower, but would like some extra performance, RGM offer a stage one conversion. Tallying a big bore stainless steel exhaust, Unichip engine management system and a serviceable performance air filter, it boosts output by approximately 15%. This means cars being used at Reef altitude will be back at their original rated power, while those at the coast will now make around 195kW (for single-VVTi) and 232 kW for models with dual VVTi. BLOWN (IN A GOOD WAY): The business end of a RGM supercharger conversion. Intercooler is crucial to reliability, especially off-road… ULTIMATE DUNE CLIMBER...RGM’s most recent addition to their line-up is a conversion to the Land Cruiser 70-series bakkie. When still running its venerable in-line six-cylinder engine, the petrol powered ‘Cruiser bakkie has a reputation as one of the finest dune climbing 4x4 vehicles available. After the powertrain change from in-line six to V6 power in late 2009, many fans of the brand were disappointed. For Land Cruiser purists the phasing out of the venerable FZ series inline six in favour of a slightly detuned, Hilux-sourced, 1GR-FE unit was a particularly poignant moment in the brand's history.In terms of output the new V6 petrol engine was more powerful by 8kW over the 4.5-litre in-line six it replaces, which produced 170kW in its last incarnation. Peak rotational force, though, was less by 24Nm, peaking at only 360Nm.RGM’s Land Cruiser bakkie V6 supercharger conversion boosts power by an almighty 120 units to a new peak of 290kW, a substantial 70% power gain. A Stage One conversion costs in the region of R14 500, with a Supercharged package retailing for between R84 000 and R95 000, depending on the model. All conversions come with a minimum six month/20 000 km warranty, but extendable to conditional three year/100 000 km cover.